How do I authorize my computer?

[maxe70259900]

I am taking a coaching class and purchased some E-books, but while going through the steps it states I need to authorize my computer. According to this its supposed to be under the HELP tab, but I do not see where this is located. Any assistance would be appreciated.

[Nanaky]

You can used shortcut: (WINDOWS) STRG + SHIFT + U or (MACINTOSH) CMD + SHIFT + U.